Flow guiding component for a container, manufacturing method thereof, and packaging container

Abstract

The present invention provides a flow guiding component for a container, a manufacturing method thereof, and a packaging container. The flow guiding component for the container includes: a tubular portion, a flange connected to the tubular portion and surrounding the tubular portion, and a closed portion located in the tubular portion. The closed portion is located in the tubular portion and is configured to seal the tubular portion. The closed portion includes a first region and a second region surrounding the first region, and the thickness of the closed portion is different in the second region and the first region; wherein, the closed portion and the flange are formed by a barrier layer, and the barrier layer includes a matrix and an oxygen barrier material. By forming the closed portion and the flange with a barrier layer including a matrix and an oxygen barrier material, the oxygen permeability rate of the flow guiding component is reduced, thereby improving the gas barrier performance of the flow guiding component and preventing the contents in the packaging container from deteriorating.

Description

[0001] This application is a divisional application of the application with the application number 202211169099.9, titled "Flow-guiding Component for Container, Its Manufacturing Method and Packaging Container", filed on September 26, 2022. Technical Field

[0002] The present invention relates to the field of packaging, and in particular to a flow-guiding component for a container, its manufacturing method and a packaging container. Background Art

[0003] Packaging containers for food usually have gas barrier properties to prevent the deterioration of the contents due to the entry of gases such as oxygen from outside the packaging container, and to prevent the volatilization of active substances from the contents. When the contents are liquid foods such as milk, juice, yogurt, etc., the packaging container may include a flow-guiding component that facilitates the outflow of the liquid and a lid that cooperates with the flow-guiding component. In order to prevent external gases from entering the packaging container, the flow-guiding component also needs to have a certain gas barrier performance. Summary of the Invention

[0004] Embodiments of the present invention provide a flow-guiding component for a container, its manufacturing method and a packaging container.

[0005] In a first aspect of the present invention, a flow-guiding component for a container is provided, including: a tubular portion, a flange connected to the tubular portion and surrounding the tubular portion, and a closed portion located in the tubular portion, wherein the closed portion is located in the tubular portion and is configured to seal the tubular portion, the closed portion includes a first region and a second region surrounding the first region, and the thickness of the closed portion is different in the second region and the first region; wherein the closed portion and the flange are formed by a barrier layer, and the barrier layer includes a matrix and an oxygen barrier material.

[0006] In at least some embodiments, the mass percentage of the matrix in the barrier layer is 12 times to 22 times the mass percentage of the oxygen barrier material in the barrier layer.

[0007] In at least some embodiments, the mass percentage of the matrix in the barrier layer is 72% to 88%, and the mass percentage of the oxygen barrier material in the barrier layer is 4% to 6%.

[0008] In at least some embodiments, the matrix is a polyolefin; the oxygen barrier material includes at least one of a first thermosetting resin and a second thermosetting resin, the first thermosetting resin is ethylene-vinyl alcohol copolymer or polyvinyl alcohol, and the second thermosetting resin is polyamide.

[0009] In at least some embodiments, the barrier layer further includes an adhesive material, and the mass percentage of the adhesive material in the barrier layer is 1 to 3 times the mass percentage of the oxygen barrier material in the barrier layer.

[0010] In at least some embodiments, the mass percentage of the adhesive material in the barrier layer is 6% to 12%.

[0011] In at least some embodiments, the adhesive material is an acid anhydride-grafted polyolefin, and the mass percentage of the acid anhydride in the acid anhydride-grafted polyolefin is greater than 1%.

[0012] In at least some embodiments, when the oxygen barrier material is an ethylene-vinyl alcohol copolymer, the mass percentage of the adhesive material in the barrier layer is 8% to 10%; when the oxygen barrier material is a polyamide, the mass percentage of the adhesive material in the barrier layer is 6% to 8%.

[0013] In at least some embodiments, the tubular portion includes a first pipe orifice and a second pipe orifice that are opposite to each other in its extending direction; wherein, the flange includes a boss, the boss is connected to the first pipe orifice and extends in a radial direction of the tubular portion away from the first pipe orifice; wherein, the closed portion and the boss are formed by the barrier layer.

[0014] In at least some embodiments, the orthographic projection of the tubular portion on the plane where the closed portion is located falls within the orthographic projection of the barrier layer on the plane where the closed portion is located.

[0015] In at least some embodiments, the barrier layer includes: a first barrier portion for forming the closed portion; a second barrier portion for forming the boss and connected to the first barrier portion; wherein, the first barrier portion has a first thickness in a direction perpendicular to the plane where the closed portion is located, and the second barrier portion has a second thickness in a direction perpendicular to the plane where the closed portion is located, wherein, the first thickness is less than the second thickness.

[0016] In at least some embodiments, the first barrier portion and the second barrier portion are of an integral structure.

[0017] In at least some embodiments, the first barrier portion includes: a first part located in the first region of the closed portion; a second part located in the second region of the closed portion; wherein, the first part has a third thickness in a direction perpendicular to the plane where the closed portion is located, and the second part has a fourth thickness in a direction perpendicular to the plane where the closed portion is located; wherein, the fourth thickness is less than the third thickness.

[0018] In at least some embodiments, the first part and the second part are of an integral structure.

[0019] In at least some embodiments, the flange further includes a flange sidewall connected to the boss. The boss includes a first side and a second side opposite to each other along the extending direction of the tubular part. The tubular part is located on the first side, and the flange sidewall is located on the second side. The closed part, the boss, and the flange sidewall are formed by the barrier layer.

[0020] In at least some embodiments, the orthographic projection of the boss on the plane where the closed part is located falls within the orthographic projection of the barrier layer on the plane where the closed part is located.

[0021] In at least some embodiments, the barrier layer includes: a first barrier part for forming the closed part; a second barrier part for forming the boss and connected to the first barrier part; and a third barrier part for forming the flange sidewall and connected to the second barrier part.

[0022] In at least some embodiments, the first barrier part, the second barrier part, and the third barrier part are of an integral structure.

[0023] In at least some embodiments, the barrier layer includes a laminated structure. The laminated structure includes a base layer and an oxygen barrier layer arranged in a laminated manner. The base layer includes the base, and the oxygen barrier layer includes the oxygen barrier material.

[0024] In at least some embodiments, the base layer includes a first sub-layer and a second sub-layer, and the oxygen barrier layer is sandwiched between the first sub-layer and the second sub-layer.

[0025] In at least some embodiments, the barrier layer includes a first barrier part located inside the tubular part and a second barrier part located outside the tubular part. The first barrier part includes the laminated structure.

[0026] In at least some embodiments, the second barrier part includes the laminated structure.

[0027] In at least some embodiments, the barrier layer further includes a third barrier part located outside the tubular part. The third barrier part is connected to the first barrier part through the second barrier part. The first barrier part, the second barrier part, and the third barrier part all include the laminated structure.

[0028] A second aspect of the present invention provides a packaging container, including the aforementioned flow guiding component for the container.

[0029] A third aspect of the present invention provides a method for manufacturing a flow guiding component for a container. The flow guiding component for the container includes: a tubular portion, a flange connected to the tubular portion and surrounding the tubular portion, and a closed portion located in the tubular portion; the closed portion is arranged to be located in the tubular portion and configured to seal the tubular portion, the closed portion includes a first region and a second region surrounding the first region, and the thickness of the closed portion is different in the second region and the first region; wherein, the manufacturing method includes: forming the closed portion and the flange by using a barrier layer, and the barrier layer includes a matrix and an oxygen barrier material.

[0030] In at least some embodiments, the flange includes a boss connected to the tubular portion; the forming the closed portion and the flange by using the barrier layer includes: forming the closed portion and the boss by using the barrier layer.

[0031] In at least some embodiments, the flange further includes a boss side wall connected to the boss; the forming the closed portion and the flange by using the barrier layer includes: forming the closed portion, the boss and the boss side wall by using the barrier layer.

[0032] In at least some embodiments, the barrier layer is formed by a co-injection molding method. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0034] Figure 1 A schematic structural diagram of a packaging container provided by an embodiment of the present invention;

[0035] Figure 2A A schematic structural diagram of a flow guiding component provided by an embodiment of the present invention;

[0036] Figure 2B An exploded schematic diagram of a self-opening mechanism provided by an embodiment of the present invention;

[0037] Figure 3 For Figure 2A a cross-sectional schematic diagram of the flow guiding component;

[0038] Figure 4 A top view of a closed portion provided by an embodiment of the present invention;

[0039] Figure 5 A cross-sectional schematic diagram of a barrier layer provided by an embodiment of the present invention;

[0040] Figure 6Cross-sectional schematic view of the barrier layer according to another embodiment of the present invention;

[0041] Figure 7 Partial cross-sectional photo of the flow guiding component according to Example 1 of the present invention;

[0042] Figure 8 Partial cross-sectional photo of the flow guiding component according to Example 2 of the present invention;

[0043] Figure 9 Photo of the flange crack on the flow guiding component according to the embodiment of the present invention. Detailed implementation manners

[0044] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0045] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the specification and claims of the present invention for patent application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms "comprising" or "including" and the like mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0046] The embodiments of the present invention provide a flow guiding component for a container, its manufacturing method and a packaging container, which can improve the gas barrier performance of the packaging container and prevent the content in the packaging container from deteriorating.

[0047] The flow guiding component for a container provided by an embodiment of the present invention includes: a tubular portion, a flange connected to the tubular portion and surrounding the tubular portion, and a closed portion located in the tubular portion. The closed portion is located in the tubular portion and is configured to seal the tubular portion. The closed portion includes a first region and a second region surrounding the first region, and the thickness of the closed portion is different in the second region and the first region. The closed portion and the flange are formed by a barrier layer, and the barrier layer includes a matrix and an oxygen barrier material.

[0048] In the flow guiding component for a container provided by the above embodiment, by forming the closed portion and the flange with a barrier layer including a matrix and an oxygen barrier material, the oxygen transmission rate of the flow guiding component is reduced, thereby improving the gas barrier performance of the flow guiding component and preventing the deterioration of the content in the packaging container.

[0049] The present invention will be described below through specific embodiments. To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components may be omitted. When any component of an embodiment of the present invention appears in more than one drawing, the component may be denoted by the same reference numeral in each drawing.

[0050] Figure 1 It is a schematic structural diagram of a packaging container provided by an embodiment of the present invention. Figure 2A It is a schematic structural diagram of a flow guiding component provided by an embodiment of the present invention. Figure 3 is Figure 2A a cross-sectional schematic diagram of the flow guiding component.

[0051] As Figure 1 shown, the packaging container 1000 provided by an embodiment of the present invention includes: a flow guiding component 100, a rotating cap 200 (i.e., a lid), and a housing 300.

[0052] As Figure 1 shown, for example, the housing 300 includes a top portion 301, a side portion 302, and a bottom portion 303. In the vertical direction (the z direction as shown in the figure), the side portion 302 is connected between the top portion 301 and the bottom portion 303. The top portion 301 has an end opening 310, and the end opening 310 is connected to the flow guiding component 100.

[0053] To prevent the deterioration of contents such as liquids, the housing 300 can be formed by folding a sheet-like composite layer. For example, from the outer surface to the inner surface of the housing 300, the sheet-like composite layer includes an ink layer with a printable pattern, an outer polymer layer, a support layer, a water and oxygen barrier layer, and an inner polymer layer arranged in sequence, etc.

[0054] In the embodiment of the present invention, the top portion 301 is taken as an example of a mountain top shape. It can be understood that in other embodiments, the top portion 301 can also be other shapes such as a planar shape, and the embodiments of the present invention do not limit this.

[0055] As shown in Figure 2A and Figure 3 shown, the flow guiding component 100 includes, for example: a tubular portion 11, a flange 12 connected to the tubular portion 11 and surrounding the tubular portion 11, and a closed portion 13 located in the tubular portion 11( Figure 2A not shown in

[0056] As shown in Figure 3 shown, the tubular portion 11 extends along the z direction (including the +z or -z direction), and includes a first pipe orifice 11A and a second pipe orifice 11B that are opposite to each other in the z direction. The rotary cover 200 rotatably covers the second pipe orifice 11B.

[0057] In some embodiments, the tubular portion 11 includes an external connection structure located on its outer wall, such as an external thread 111. The rotary cover 200 includes a connection structure located on its inner side wall, such as an internal thread, which is configured to cooperate with the external thread 111 of the tubular portion 11. In this way, when the second pipe orifice 11B of the tubular portion 11 is opened or sealed with the rotary cover 200, the mutual disengagement or mutual engagement of the external thread 111 of the tubular portion 11 and the internal thread of the rotary cover 200 can be utilized to achieve this, thereby improving the sealing performance of the packaging container and the convenience during use.

[0058] In the embodiments of the present invention, the lid is taken as an example of the rotary cover 200 for description. It can be understood that in other embodiments, the lid can be a lid with other structures such as a snap joint portion, as long as it is convenient to connect the lid to the flow guiding component in a repeatedly operable manner.

[0059] As shown in Figure 3 shown, the closed portion 13 is located in the tubular portion 11 and is configured to seal the tubular portion 11. For example, the closed portion 13 extends along a direction perpendicular to the extension direction of the tubular portion 11 (such as the x direction shown in the figure), thereby spatially separating the flow guiding component 100 into upper and lower two-layer spaces. The upper space SP1 is located in the tubular portion 11, and the lower space SP2 communicates with the outer shell 300. By providing the closed portion 13, the content can be kept from flowing into the flow guiding component 100 before the first use of the packaging container 1000, so as to prevent the leakage or deterioration of the content.

[0060] Figure 4 It is a top view of the closed portion provided by the embodiments of the present invention.

[0061] As shown in Figure 3 and Figure 4 shown, the closed portion 13 includes a first region 131 and a second region 132 surrounding the first region 131. The thickness of the closed portion 13 is different in the second region 132 and the first region 131.

[0062] For example, the closed portion 13 further includes a central portion located in the first region 131 and a peripheral portion located in the second region 132 and surrounding the central region. The thickness of the central portion is greater than that of the peripheral portion. In this way, when it is necessary to pour out the contents, it is easier to cut or slit the peripheral portion in the second region 132, thereby facilitating the outflow of the contents through the diversion member.

[0063] In the embodiments of the present invention, the cross-sectional shape of the tubular portion 11 is taken as an example of a circle for description. It can be understood that in other embodiments, the tubular portion 11 may have regular shapes such as oval, rectangular, triangular, or irregular shapes, and the embodiments of the present invention do not limit this.

[0064] Correspondingly, in the embodiments of the present invention, the closed portion 13 is taken as an example of a circle for description. It can be understood that in other embodiments, the closed portion 13 may have a shape matching the cross-section of the tubular portion 11, such as regular shapes like oval, rectangular, triangular, or irregular shapes, and the embodiments of the present invention do not limit this. As Figure 4 shown, when the closed portion 13 is circular, the first region 131 is disc-shaped and the second region 132 is annular.

[0065] As Figure 3 shown, the tubular portion 11 may further include an inner connection structure located on its inner wall, such as an internal thread 112. In some embodiments, the packaging container 1000 may include a self-opening mechanism. Figure 2B This is an exploded view of the self-opening mechanism provided by the embodiments of the present invention. As Figure 2B shown, the self-opening mechanism includes a wall portion 211 and a self-opening sleeve 212 that can be in a separated state. The wall portion 211 is located inside the rotary cap 200 and is configured to rotate together with the rotary cap 200. For example, the wall portion 211 is coaxially arranged with the rotation axis of the rotary cap 200, and when the rotary cap 200 rotates, it can drive the wall portion 211 to rotate coaxially.

[0066] For example, the self-opening sleeve 212 is located in the tubular portion 11 and has an external thread on its outer wall, so that it cooperates with the internal thread 112 of the tubular portion 11 and can rotate and move in the direction away from the outer shell 300 (such as the +z direction shown in the figure) or in the direction towards the outer shell 300 (such as the -z direction shown in the figure).

[0067] For example, the self-opening sleeve 212 is coaxially arranged with the tubular portion 11 and is configured such that when the wall portion 211 of the rotary cap 200 rotates and moves upward in the +z direction, the self-opening sleeve 212 rotates and moves downward in the -z direction.

[0068] In some embodiments, the self-opening sleeve 212 is provided with a tip 212a at an end close to the outer shell 300. The tip 212a is configured to rotate as the self-opening sleeve 212 rotates, so as to pierce or cut open the sealing portion 13. For example, when the packaging container needs to be opened for the first time, the rotating cover 200 rotates and moves in the +z direction. At this time, the self-opening sleeve 212 can rotate and move in the -z direction at the same time, so that the tip 212a of the self-opening sleeve 212 cuts open the annular peripheral portion of the sealing portion 13 at the second region 132. Continuing to rotate the rotating cover 200, the tip 212a will cut open the entire peripheral portion along the second region 132, causing the disk-shaped central portion to fall off.

[0069] As Figure 2A and Figure 3 shown, the flange 12 is arranged to surround the periphery of the tubular portion 11, for example, around the first pipe orifice 11A of the tubular portion 11.

[0070] In some embodiments, the sealing portion 13 and the flange 12 are formed by a barrier layer 10, and the barrier layer 10 includes a matrix and an oxygen barrier material. By adding an oxygen barrier material to the barrier layer, the oxygen barrier rate of the sealing portion 13 and the flange 12 can be improved, the oxygen permeability rate of the packaging container can be reduced, and the deterioration of the contents can be avoided.

[0071] As Figure 3 shown, for example, the flange 12 includes a boss 121 and a boss side wall 122 connected to the boss 121. The boss 121 is connected to the first pipe orifice 11A and extends in the radial direction of the tubular portion 11 (for example, the x direction shown in the figure) away from the first pipe orifice 11A. The sealing portion 13 and the boss 121 are formed by the barrier layer 10.

[0072] In some cases, when only the sealing portion 13 is formed by the barrier layer 10 and the boss 121 is not formed by the barrier layer, since the boss 121 is exposed to the air, external gas or air can still enter the packaging container 1000 through the boss 121. Therefore, although the sealing portion 13 has oxygen barrier performance, the oxygen barrier performance of the boss 121 is worse than that of the sealing portion 13.

[0073] In contrast, in the embodiments of the present invention, by forming both the boss 121 and the sealing portion 13 by the barrier layer 10, the oxygen barrier performance of the boss 121 and the sealing portion 13 is improved, thereby effectively reducing the oxygen permeability rate of the packaging container and preventing the deterioration of the contents.

[0074] As Figure 3 shown, for example, the boss 121 and the sealing portion 13 are of an integral structure. In this way, when manufacturing the sealing portion 13 and the boss 121, it is convenient to integrally form them by methods such as co-injection molding, and the barrier layer 10 can extend from the sealing portion 13 to the boss 121.

[0075] For example, the orthographic projection of the tubular portion 11 on the plane P where the closed portion 13 is located falls within the orthographic projection of the barrier layer 10 on the plane P where the closed portion 13 is located. That is, the orthographic projection of the barrier layer 10 extends beyond the region where the tubular portion 11 is located, thereby further improving the oxygen barrier performance of the boss 121 and the packaging container 1000.

[0076] For example, the barrier layer 10 includes a first barrier portion 101 and a second barrier portion 102. The first barrier portion 101 is used to form the closed portion 13, and the second barrier portion 102 is used to form the boss 121 and is connected to the first barrier portion 101. The first barrier portion 101 has a first thickness in the z direction, and the second barrier portion 102 has a second thickness in the z direction. For example, the first thickness is less than the second thickness.

[0077] In the embodiment of the present invention, the thicknesses of the first barrier portion 101 and the second barrier portion 102 may be the same or different. Compared with the case where the first thickness and the second thickness are equal, when the first thickness is less than the second thickness, on the one hand, when opening the packaging container, due to the smaller first thickness of the first barrier portion 101, the closed portion 13 is thinner, which is convenient for cutting or piercing; on the other hand, due to the larger second thickness of the second barrier portion 102, the oxygen barrier performance of the boss can be further improved.

[0078] In the embodiment of the present invention, the first barrier portion 101 and the second barrier portion 102 may be an integral structure to facilitate their integral formation and simplify the manufacturing process.

[0079] As Figure 3 shown, the first barrier portion 101 includes a first part 101a and a second part 101b. The first part 101a is located in the first region 131 of the closed portion 13, and the second part 101b is located in the second region 132 of the closed portion 13. The first part 101a has a third thickness in the z direction, and the second part 101b has a fourth thickness in the z direction, and the fourth thickness is less than the third thickness.

[0080] In this embodiment, since the fourth thickness is less than the third thickness, the thickness of the first barrier portion 101 in the annular first region 131 is less than its thickness in the disk-shaped central portion, which is more conducive to easily cutting or piercing the closed portion. When the fourth thickness is less than the third thickness, the first thickness of the first barrier portion 101 is the average value of the third thickness and the fourth thickness.

[0081] Furthermore, for example, the fourth thickness is less than 50% of the third thickness, preferably less than 30%. For example, the fourth thickness is 0.2 - 0.3 mm, and the third thickness is 0.6 - 1 mm.

[0082] In some embodiments, the first part and the second part of the first barrier portion 101 are an integral structure to facilitate their integral formation and simplify the manufacturing process.

[0083] As Figure 3 shown, the flange 12 further includes a flange side wall 122 connected to the boss 121. The end opening 310 of the top 301 of the outer shell 300 is attached to the flange side wall 122, thereby realizing the connection with the diversion component 100.

[0084] In the case where the flange side wall 122 is not provided, if the end opening 310 of the top 301 is directly connected to the boss 121, the sealing performance between the two will deteriorate, thereby affecting the oxygen barrier performance of the packaging container. In the embodiment of the present invention, by providing the flange side wall 122, not only the sealing performance of the packaging container is improved, but also its oxygen barrier performance can be improved.

[0085] As Figure 2A shown, there may be multiple flange side walls 122, for example, four. It can be understood that the number of flange side walls 122 in the embodiment of the present invention is not limited, and this number can be determined according to the shape of the packaging container.

[0086] As Figure 3 shown, for example, the boss 121 includes a first side 121A and a second side 121B opposite to each other along the z direction. The tubular part 11 is located on the first side 121A, and the flange side wall 122 is located on the second side 121B. For example, the closed part 13, the boss 121, and the flange side wall 122 are formed by the barrier layer 10.

[0087] In this embodiment, by forming the closed part 13, the boss 121, and the flange side wall 122 all by the barrier layer 10, not only the oxygen barrier performance of the closed part 13, the boss 121, and the flange side wall 122 can be improved simultaneously, but also it is beneficial for the three to be integrally formed, simplifying the manufacturing process.

[0088] For example, the closed part 13, the boss 121, and the flange side wall 122 are of an integral structure, so that the barrier layer 10 can extend from the closed part 13 to the boss 121 and the flange side wall 122. When manufacturing the closed part 13, the boss 121, and the flange side wall 122, it is convenient to integrally form them by methods such as co-injection molding.

[0089] For example, the orthographic projection of the boss 121 on the plane P where the closed part 13 is located falls within the orthographic projection of the barrier layer 10 on the plane P where the closed part 13 is located. That is, the orthographic projection of the barrier layer 10 exceeds the area where the boss 121 is located, thereby further improving the oxygen barrier performance of the boss 121, the flange side wall 122, and the packaging container 1000.

[0090] As Figure 3As shown, the barrier layer 10 further includes a third barrier portion 103, which is used to form the convex platform side wall 122 and is connected to the second barrier portion 102. The first barrier portion 101, the second barrier portion 102, and the third barrier portion 103 are of an integral structure, so that the two can be integrally formed, simplifying the manufacturing process.

[0091] Figure 5 This is a cross-sectional schematic diagram of the barrier layer according to an embodiment of the present invention. As Figure 5 shown, the barrier layer 10 includes a laminated structure LS. The laminated structure LS includes, for example, a substrate layer 401 and an oxygen barrier layer 402 arranged in a laminated manner. The substrate layer 401 includes a substrate, and the oxygen barrier layer 402 includes an oxygen barrier material. Figure 5 In, the substrate layer 401 in the barrier layer 10 is a single layer.

[0092] Figure 6 This is a cross-sectional schematic diagram of the barrier layer according to another embodiment of the present invention. Different from Figure 5 that, Figure 6 the substrate layer is multi-layer, for example, double-layer.

[0093] As Figure 6 shown, the barrier layer 10 includes a laminated structure LS. The laminated structure LS includes, for example, a substrate layer 401 and an oxygen barrier layer 402 arranged in a laminated manner. The substrate layer 401 includes a first sub-layer 411 and a second sub-layer 412, and the oxygen barrier layer 402 is sandwiched between the first sub-layer 411 and the second sub-layer 412. In this case, both the first sub-layer 411 and the second sub-layer 412 include a substrate, and the oxygen barrier layer 402 includes an oxygen barrier material.

[0094] As mentioned above, for example, the barrier layer 10 includes a first barrier portion 101 on the inner side of the tubular portion 11 and a second barrier portion 102 and a third barrier portion 130 on the outer side of the tubular portion 11.

[0095] For example, when the closed portion 13 is formed by the first barrier portion 101, the first barrier portion may include Figure 5 or Figure 6 the laminated structure LS in.

[0096] For example, when the closed portion 13 is formed by the first barrier portion 101 and the convex platform 121 is formed by the second barrier portion 102, both the first barrier portion 101 and the second barrier portion 102 include Figure 5 or Figure 6 the laminated structure LS in, which is beneficial to the integral formation of the two and simplifies the manufacturing process.

[0097] For example, when the closed portion 13 is formed by the first barrier portion 101, the convex platform 121 is formed by the second barrier portion 102, and the convex platform side wall 122 is formed by the third barrier portion 103, the first barrier portion 101, the second barrier portion 102, and the third barrier portion 103 all includeFigure 5 or Figure 6 The laminated structure LS in Figure 6 is beneficial to the formation of the three-in-one body and simplifies the manufacturing process.

[0098] In an embodiment of the present invention, the substrate is, for example, polyolefin, and the polyolefin may include polypropylene or polyethylene, preferably polyethylene, such as High Density Polyethylene (HDPE), so as to improve the stability of the barrier layer and ensure the sealing performance inside the packaging container.

[0099] The melt flow rate (MFR) of the substrate material needs to be greater than 8 g / 10 min (190 °C, 2.16 kg), preferably greater than 16 g / 10 min (190 °C, 2.16 kg), and the test method is ASTM D1238. Since the barrier film part is very thin, if the MFR is too low, the barrier layer part cannot be formed.

[0100] The 1% secant modulus of the substrate material should be less than 1800 Mpa, preferably less than 1200 Mpa. The test method is ASTM D638). If it is too large, the cutting ring will not be able to open the film.

[0101] In some embodiments, the mass percentage of the substrate in the barrier layer 10 is 12 to 22 times the mass percentage of the oxygen barrier material in the barrier layer 10. For example, the mass percentage of the substrate in the barrier layer 10 is 72% to 88%, thereby further improving the stability of the barrier layer and ensuring the sealing performance of the packaging container. Good oxygen barrier performance can be obtained within the above range. The mass percentage of the oxygen barrier material in the barrier layer 10 is 4% to 6%, thereby improving the gas barrier performance of the barrier layer and reducing the oxygen transmission rate.

[0102] In an embodiment of the present invention, "the mass percentage of A in B" refers to the proportion of the mass of A in the mass of B, which can be expressed in wt%.

[0103] In an embodiment of the present invention, the oxygen barrier material includes at least one of a first thermosetting resin and a second thermosetting resin, that is to say, the oxygen barrier material may include one of the first thermosetting resin and the second thermosetting resin, or include both.

[0104] For example, the first thermosetting resin is ethylene / vinyl alcohol copolymer (EVOH) or polyvinyl alcohol (PVA), and the second thermosetting resin is polyamide (PA). EVOH has good gas barrier properties, and in addition, it has excellent transparency, gloss, mechanical strength, stretchability, wear resistance, cold resistance, and surface strength. Polyamide (PA) is resistant to weak acids, weak bases, and most non-polar solvents, has good stability, and also has good gas barrier properties. Compared with EVOH, PA is preferred because of its lower cost and less sensitivity to air humidity.

[0105] For example, the barrier layer 10 may further include an adhesive material for enhancing the adhesion between the matrix and the barrier material and providing good cohesion between the layers. For example, the adhesive material is an acid anhydride-modified polymer concentrate, which can be mixed into the matrix (such as polyolefin) as a blend component.

[0106] For example, the mass percentage of the adhesive material in the barrier layer 10 is 1 to 3 times the mass percentage of the oxygen barrier material in the barrier layer 10. In some embodiments, the mass percentage of the adhesive material in the barrier layer 10 is 6% to 12%, thereby further enhancing the adhesion between the matrix and the barrier material.

[0107] In the embodiments of the present invention, the adhesive material may be an acid anhydride-grafted polyolefin, for example, a maleic anhydride-grafted polyolefin, wherein the mass percentage of the acid anhydride in the acid anhydride-grafted polyolefin is greater than 1%. In some embodiments, the acid anhydride-grafted polyolefin may be a maleic anhydride-grafted polyolefin, wherein the mass percentage of maleic anhydride in the maleic anhydride-grafted polyolefin is greater than 1%. For example, the adhesive material is maleic anhydride-grafted high-density polyethylene (HDPE).

[0108] During actual production, the content of the appropriate adhesive material can be selected according to the composition of the oxygen barrier material. For example, when the oxygen barrier material is EVOH, the mass percentage of the adhesive material in the barrier layer is greater than 6%, preferably 8 to 10%. Because when it is lower than 8%, cracks are more likely to occur at the corners of the flange, for example, as Figure 9 shown.

[0109] For another example, when the oxygen barrier material is PA, the mass percentage of the adhesive material in the barrier layer is greater than 4%, preferably 6% to 8%. When the mass percentage of the adhesive is 6% to 8%, the oxygen barrier effect is the best. The test method is referred to ASTM D3985.

[0110] In the embodiments of the present invention, the barrier layer may further include masterbatch and slip agent, etc., to enhance the light-blocking performance and smoothness performance.

[0111] Another embodiment of the present invention also provides a manufacturing method for a flow guiding component for a container. For example, this manufacturing method can manufacture the flow guiding component for a container described in any of the previous embodiments.

[0112] Referring to Figures 1 to 6 , in the manufacturing method provided by the embodiment of the present invention, the flow guiding component 100 for a container includes: a tubular portion 11, a flange 12 connected to the tubular portion 11 and surrounding the tubular portion 11, and a closed portion 13 located in the tubular portion 11. The closed portion 13 is arranged to be located in the tubular portion 11 and is configured to seal the tubular portion 11. The closed portion 13 includes a first region 131 and a second region 132 surrounding the first region 131, and the thickness of the closed portion 13 is different in the second region 132 and the first region 131. The above manufacturing method includes: forming the closed portion 13 and the flange 12 by using a barrier layer 10, where the barrier layer 10 includes a matrix and an oxygen barrier material.

[0113] For example, the flange 12 includes a boss 121 connected to the tubular portion 11, and the step of forming the closed portion 13 and the flange 12 by using the barrier layer 10 includes: forming the closed portion 13 and the boss 121 by using the barrier layer 10. In this way, not only the oxygen barrier performance of the closed portion 13 and the boss 121 is improved, but also it is beneficial to the integral formation of the closed portion 13 and the boss 121, simplifying the manufacturing process.

[0114] For example, the flange 12 further includes a boss side wall 122 connected to the boss 121, and the step of forming the closed portion 13 and the flange 12 by using the barrier layer 10 includes: forming the closed portion 13, the boss 121 and the boss side wall 122 by using the barrier layer 10. In this way, not only the oxygen barrier performance of the closed portion 13, the boss 121 and the boss side wall 122 is improved, but also it is beneficial to the integral formation of the closed portion 13, the boss 121 and the boss side wall 122, simplifying the manufacturing process.

[0115] In the embodiment of the present invention, the barrier layer 10 can be formed by a co-injection method. Since the barrier layer 10 has a laminated structure, if each layer is formed separately, it will increase the difficulty of the manufacturing process and cannot ensure the consistency and stability of the quality of the flow guiding component. When the co-injection method is used to form the barrier layer 10, not only the manufacturing process is simplified, saving labor and material costs, but also better product consistency and stability can be obtained.

[0116] When forming the barrier layer by the co-injection method, for example, the matrix is the surface layer material and the barrier material is the interlayer material. During the filling process, the matrix is filled first, and then the barrier material is filled. Compared with chemical and mechanical methods, the raw materials in the co-injection method are combined together during the filling process, so it is easier to control. For example Figure 3 in, the protrusion at the center point portion of the closed portion 13 is the filling position point when forming the barrier layer by the co-injection method.

[0117] The following are examples of the flow guiding components in the container provided by the present invention.

[0118] Example 1

[0119] Refer to Figure 3 , and the co-injection molding method is adopted to form the closed part 13, the boss 121 and the boss side wall 122 of the flow guiding component 100 by using the barrier layer.

[0120] 1) Composition of the barrier layer:

[0121] Matrix: HDPE

[0122] Oxygen barrier material: ethylene / vinyl alcohol EVOH (Kuraray EVOH XEP-1248A), 3.5 wt% - 4 wt%

[0123] Adhesive: maleic anhydride grafted HDPE, 8 wt%.

[0124] 2) Test results:

[0125] Oxygen transmission rate (OTR) of the packaging container at 50% RH (air humidity): 0.5 ± 0.1 ml / (m 2 ·year)

[0126] Oxygen transmission rate (OTR) of the packaging container at 90% RH (air humidity): ~3 ml / (m 2 ·year).

[0127] Figure 7 This is a partial cross-sectional photo of the flow guiding component of Example 1 of the present invention. As can be seen from Figure 7 it, the closed part 13, the boss 121 and the boss side wall 122 of the flow guiding component are all formed by the barrier layer 10. The barrier layer 10 includes a first sub-layer 411 and a second sub-layer 412 of the matrix layer and an interlayer located between the two - the oxygen barrier layer 402.

[0128] Example 2

[0129] Refer to Figure 3 , and the co-injection molding method is used to form the closed part 13, the boss 121 and the boss side wall 122 of the flow guiding component 100 by using the barrier layer.

[0130] 1) Composition of the barrier layer:

[0131] Matrix: HDPE

[0132] Oxygen barrier material: polyamide PA (Mitsubishi MX Nylon S6003LD), 6 wt%

[0133] Adhesives: Maleic anhydride grafted HDPE, at 4 wt%, 6 wt%, 8 wt%, 10 wt%, and 12 wt% respectively.

[0134] 2) Test results: Table 1 shows the oxygen transmission rate test results of the packaging materials with different contents of adhesives.

[0135] Table 1

[0136]

[0137] As can be seen from Table 1, when the mass percentage of the adhesive in the barrier layer is 6% - 8%, the oxygen transmission rate of the packaging container at 50% RH (air humidity) is less than 1 ml / (m 2 ·year), and the oxygen transmission rate of the packaging container at 90% RH (air humidity) is also less than 1 ml / (m 2 ·year).

[0138] Figure 8 This is a partial cross-sectional photo of the flow guiding component of Example 2 of the present invention. As Figure 8 can be seen, the closed part 13, the boss 121, and the side wall 122 of the boss of the flow guiding component are all formed by the barrier layer 10. The barrier layer 10 includes a first sub-layer 411 of the matrix layer, a second sub-layer 412, and an interlayer located between the two - an oxygen barrier layer 402.

[0139] Comparing Example 1 and 2, it can be seen that when polyamide PA is used as the oxygen barrier material, a lower oxygen transmission rate can be obtained at 90% RH (air humidity).

[0140] In the above container flow guiding component, its manufacturing method, and packaging container provided by the embodiments of the present invention, by forming the closed part and the flange with a barrier layer including a matrix and an oxygen barrier material, on the one hand, the oxygen transmission rate of the flow guiding component can be reduced, thereby improving the gas barrier performance of the flow guiding component and preventing the deterioration of the content in the packaging container; on the other hand, the closed part and the flange can be integrally formed, simplifying the manufacturing process and saving labor and material costs. Especially when formed by the co - injection molding method, not only the manufacturing process is further simplified, but also better product consistency and stability can be obtained.

[0141] In the embodiments of the present disclosure, the high - density polyethylene HDPE used is Sabic HDPE CC2056, and the melt flow ratio (tested according to ISO 1133 at 190 degrees Celsius and 2.16 kg) is 20 dg / min, and the density is 956 kg / m 3 ; the maleic anhydride grafted high - density polyethylene used is DuPont TM E265, with a melt flow ratio (tested according to ISO 1133 at 190 °C and 2.16 kg) of 12 dg / min and a density of 950 kg / m 3 , and the maleic anhydride content > 1.0 wt%.

[0142] In the embodiments of the present disclosure, the test method for the oxygen transmission rate (OTR) is the oxygen transmission data tested by the coulometric method specified in ASTM D3985 standard. The test equipment is a 2 / 22H type oxygen transmission tester. The specific test method includes the following steps:

[0143] 1) Control the test environment temperature at 23 °C and a relative humidity of less than 1%. For example, a Schneider SUA0501 type precision air conditioner can be used for control;

[0144] 2) Cut the package to be tested, retain the lid and part of the top 301, and then epoxy-seal and bond one end of the top 301 to the test rack (test chamber) of the 2 / 22H type oxygen transmission tester;

[0145] 3) After the sample is fixed, according to specific needs, use the control panel of the 2 / 22H type oxygen transmission tester to adjust the test temperature and relative humidity to a predetermined value (such as 23 °C and 50% relative humidity);

[0146] 4) Pass a mixed gas containing 98% (volume percentage) of nitrogen and 2% (volume percentage) of hydrogen into the test rack for 7 hours to remove the oxygen in the system;

[0147] 5) Pass oxygen into the test rack for 24 hours using a carrier gas (the carrier gas is a mixed gas containing 98% (volume percentage) of nitrogen and 2% (volume percentage) of hydrogen). The obtained result is the oxygen transmission rate of the tested sample in one day, and the result multiplied by 365 is the oxygen transmission rate of the tested sample in one year.

[0148] In this article, the following points need to be noted:

[0149] (1) The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0150] (2) Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0151] (3) The above description is only a demonstration implementation mode of the present invention, rather than used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

[0152] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A flow guiding component for a container, comprising: A tubular portion, a flange connected to the tubular portion and surrounding the tubular portion, and a closed portion located in the tubular portion wherein the closed portion is located in the tubular portion and configured to seal the tubular portion, the closed portion includes a first region and a second region surrounding the first region, and the thickness of the closed portion is different in the second region and the first region; wherein the closed portion and the flange are formed by a barrier layer, the barrier layer includes a matrix and an oxygen barrier material, and the barrier layer is formed by a co-injection molding method so that the closed portion and the flange are formed as an integral structure; wherein the barrier layer includes a laminated structure, the laminated structure includes a matrix layer and an oxygen barrier layer stacked, the matrix layer includes a first sub-layer and a second sub-layer, and the oxygen barrier layer is sandwiched between the first sub-layer and the second sub-layer; wherein the matrix layer includes the matrix, the oxygen barrier layer includes the oxygen barrier material, the matrix is a polyolefin, the oxygen barrier material includes at least one of a first thermosetting resin and a second thermosetting resin, the first thermosetting resin is ethylene-vinyl alcohol copolymer or polyvinyl alcohol, and the second thermosetting resin is polyamide; the mass percentage of the oxygen barrier material in the barrier layer is 4% to 6%.

2. The flow guiding component for a container according to claim 1, wherein, The mass percentage of the matrix in the barrier layer is 12 times to 22 times the mass percentage of the oxygen barrier material in the barrier layer.

3. The flow guiding component for a container according to claim 2, wherein, The mass percentage of the matrix in the barrier layer is 72% to 88%.

4. The flow guiding member for a container according to claim 2, wherein, The barrier layer further includes an adhesive material, and the mass percentage of the adhesive material in the barrier layer is 1 time to 3 times the mass percentage of the oxygen barrier material in the barrier layer.

5. The flow guiding member for a container according to claim 4, wherein, The mass percentage of the adhesive material in the barrier layer is 6% to 12%.

6. The flow guiding component for a container according to claim 4, wherein, The adhesive material is an acid anhydride grafted polyolefin, wherein the mass percentage of the acid anhydride in the acid anhydride grafted polyolefin is greater than 1%.

7. The flow guiding component for a container according to claim 5, wherein, when the oxygen barrier material is ethylene-vinyl alcohol copolymer, the mass percentage of the adhesive material in the barrier layer is 8% to 10%; when the oxygen barrier material is polyamide, the mass percentage of the adhesive material in the barrier layer is 6% to 8%.

8. The flow guiding component for a container according to claim 1, Among them, the tubular portion includes a first pipe orifice and a second pipe orifice that are opposite to each other in its extending direction; wherein the flange includes a boss, the boss is connected to the first pipe orifice and extends in a radial direction of the tubular portion away from the first pipe orifice; wherein the closed portion and the boss are formed by the barrier layer.

9. The flow guiding member for a container according to claim 8, wherein, The orthographic projection of the tubular portion on the plane where the closed portion is located falls within the orthographic projection of the barrier layer on the plane where the closed portion is located.

10. The flow guiding component for a container according to claim 8, Among them, the barrier layer includes: a first barrier portion for forming the closed portion; a second barrier portion for forming the boss and connected to the first barrier portion; Wherein, the first barrier portion has a first thickness in a direction perpendicular to the plane of the closed portion, the second barrier portion has a second thickness in a direction perpendicular to the plane of the closed portion, and the first thickness is less than the second thickness.

11. The flow guiding member for a container according to claim 10, wherein, The first barrier portion and the second barrier portion are of an integral structure.

12. The flow guiding component for a container according to claim 10, Among them, The first barrier portion includes: A first part located in the first region of the closed portion; A second part located in the second region of the closed portion; Wherein, the first part has a third thickness in a direction perpendicular to the plane of the closed portion, the second part has a fourth thickness in a direction perpendicular to the plane of the closed portion, and the fourth thickness is less than the third thickness.

13. The flow guiding member for a container according to claim 12, wherein, The first part and the second part are of an integral structure.

14. The flow guiding component for a container according to claim 8, Among them, The flange further includes a flange side wall connected to the boss; Wherein, the boss includes a first side and a second side opposite to each other along the extending direction of the tubular portion, the tubular portion is located on the first side, and the flange side wall is located on the second side; Wherein, the closed portion, the boss and the flange side wall are formed by the barrier layer.

15. The flow guiding member for a container according to claim 14, wherein, The orthographic projection of the boss on the plane of the closed portion falls within the orthographic projection of the barrier layer on the plane of the closed portion.

16. The flow guiding member for a container according to claim 14, wherein, The barrier layer includes: A first barrier portion for forming the closed portion; A second barrier portion for forming the boss and connected to the first barrier portion; A third barrier portion for forming the flange side wall and connected to the second barrier portion.

17. The flow guiding member for a container according to claim 16, wherein, The first barrier portion, the second barrier portion and the third barrier portion are of an integral structure.

18. The flow guiding member for a container according to claim 1, wherein, The barrier layer includes a first barrier portion located inside the tubular portion and a second barrier portion located outside the tubular portion, and the first barrier portion includes the laminated structure.

19. The flow guiding member for a container according to claim 18, wherein, The second barrier portion includes the laminated structure.

20. The flow guiding member for a container according to claim 18, wherein, The barrier layer further includes a third barrier portion located outside the tubular portion, and the third barrier portion is connected to the first barrier portion through the second barrier portion, Wherein, the first barrier portion, the second barrier portion and the third barrier portion all include the laminated structure.

21. A packaging container, comprising the flow guiding component for a container according to any one of claims 1-20.

22. A manufacturing method of a flow guiding component for a container, wherein the flow guiding component for the container comprises: A tubular portion, a flange connected to the tubular portion and surrounding the tubular portion, and a closed portion located in the tubular portion; The closed portion is arranged to be located in the tubular portion and configured to seal the tubular portion, the closed portion includes a first region and a second region surrounding the first region, and the thickness of the closed portion is different in the second region and the first region; Wherein, the manufacturing method includes: Forming the closed portion and the flange by using a barrier layer, wherein the barrier layer includes a matrix and an oxygen barrier material, Wherein, the barrier layer is formed by a co-injection molding method so that the closed portion and the flange are formed as an integral structure; Among them, the barrier layer includes a laminated structure, the laminated structure includes a matrix layer and an oxygen barrier layer arranged in a laminated manner, the matrix layer includes a first sub-layer and a second sub-layer, and the oxygen barrier layer is sandwiched between the first sub-layer and the second sub-layer; Among them, the matrix layer includes the matrix, the oxygen barrier layer includes the oxygen barrier material, the matrix is a polyolefin, the oxygen barrier material includes at least one of a first thermosetting resin and a second thermosetting resin, the first thermosetting resin is ethylene-vinyl alcohol copolymer or polyvinyl alcohol, and the second thermosetting resin is polyamide; Among them, the mass percentage of the oxygen barrier material in the barrier layer is 4% to 6%.

23. According to the manufacturing method described in claim 22, wherein: The flange includes a boss connected to the tubular portion; Forming the closed portion and the flange using the barrier layer includes: forming the closed portion and the boss using the barrier layer.

24. According to the manufacturing method described in claim 23, wherein: The flange further includes a boss side wall connected to the boss; Forming the closed portion and the flange using the barrier layer includes: forming the closed portion, the boss and the boss side wall using the barrier layer, so that the closed portion, the boss and the boss side wall form an integral structure.

Images